Help setting up a Shurflo vacuum pump system

[DRoseum]

https://www.roseummaple.com/2021/02/...um-system.html

That common blue wire should be unaffected by a freeze. It's just what is used to determine fluid level in conjunction with other 2 probes using resistivity/conductivity of the fluid.

Only downside, those DONT work on permeate (no minerals or compounds so NO conductivity). You would have to use float (mechanical or sensor/signal) for that application. I use that to shut off RO automatically on rinse/flush cycle.

[blucoondawg]

https://www.roseummaple.com/2021/02/...um-system.html

That common blue wire should be unaffected by a freeze. It's just what is used to determine fluid level in conjunction with other 2 probes using resistivity/conductivity of the fluid.

Only downside, those DONT work on permeate (no minerals or compounds so NO conductivity). You would have to use float (mechanical or sensor/signal) for that application. I use that to shut off RO automatically on rinse/flush cycle.

I've built a couple of these and if I had to do it all over again, I'd probably simplify things even more and use more plug and play components vs custom building everything. On one unit I put in a parallel pump bypass line with an ultra low crack pressure check valve (0.3psi = 8 inch of water). If pump fails or shuts off while sap is still flowing it can naturally bypass the failed pump.


Temp controller that is pre-built on Amazon that has 2 independent sensors and outlets. This wasn't available when I built my units, but if it was, I would've tried it.

https://a.co/d/1fGQ4rm

This will let you plug the 12v transformer right into one outlet and control the pump. Then you can plug a 120v heater / seed germination mat in the other and set your temps for both.

Here is a good power supply for this setup
https://a.co/d/82m0HTp

Easy 120v heater that's 20W (search for one that's best size for your pump box
https://a.co/d/asaajfZ

If you have to transfer sap, use a level controller and a seperate pump / power supply
https://a.co/d/5zrJOWd

I use all push fit (john guest style) connectors so it's super compact and simple to assemble, disassemble, clean etc.

They make low pressure (0.3 psi) check valves in 1/4" that you could put on each line at the pump manifold to prevent backflow. They are kind of pricey if you have a lot of lines. I use CV spouts and haven't felt compelled to add these.
https://www.freshwatersystems.com/pr...k-pressure-red

Great information, do you think the power supply you list would be enough to run a shurflo 4048? I built a box last year and used a different type of power supply it's one of the ones that looks like a long flat tin box with screw terminals on one end to make the connections, I haven't pinned down the problem yet but I think what's happening is that power supply is getting too hot and shutting down. I go out there mid day and the pump isn't running, I unplug the power and plug it back in and it starts up again and seems to then run fine until the next morning when it starts again. It's been giving me fits. I also like your John first style fittings. I may rebuild my manifold with that type so it's easier to add or remove components

[DRoseum]

According to shurflo 4048 specs, it can pull up to 10 Amps. The 150Watt 12vdc transformer above would top out at 12.5 AMPS, leaving 20% headroom.

If you want, you could move up to a 200Watt transformer (16.6 amps) to give more operational headroom at peak load.

12V Power Supply 200W Low Voltage Transformer Adapter,AC90-130V to DC12V 16.66A 200 Watts Waterproof IP67 for Indoor and Outdoor Use https://a.co/d/bq1qKFx

[blucoondawg]

The supply i use now is 20 amp supposedly. Not all supplies are equal though. I figured that would be plenty big to avoid any issues. Maybe it's just not capable of running constantly without getting hot, I don't know. I'm not even sure that's my issue but it could be. This week I'm gonna put a amp meter on it and see what it actually draws, I'm suspecting it's not going to draw anywhere near 10 amps except on start up, unless maybe when it's dead heading it goes higher, I don't know yet. I am going to try a different one though

According to shurflo 4048 specs, it can pull up to 10 Amps. The 150Watt 12vdc transformer above would top out at 12.5 AMPS, leaving 20% headroom.

If you want, you could move up to a 200Watt transformer (16.6 amps) to give more operational headroom at peak load.

12V Power Supply 200W Low Voltage Transformer Adapter,AC90-130V to DC12V 16.66A 200 Watts Waterproof IP67 for Indoor and Outdoor Use https://a.co/d/bq1qKFx

[trevor47smith]

Hello

Well I have built my Shurflo setup but am struggling with the W1209 settings I have Temp Set to -1C, P0 - C, P1 - 3. Thought these setting would turn my pump on at 2C and off at -1C however it is not working like that. It is shutting off at -2.5 and on at -2 and tested on two different controllers. If I set it so Temp Set to 0, P0 - C, P1 - 3 it will shut off at 0 and turn on at 3C.

Can anyone help me out confused to hell

Think there is a bug in these things when trying to cross over between - and + going to order something else

Setpoint Hys(P1) Relay ON Relay OFF
2 3 5 3
0 3 3 0
-1 3 -1.9 -2
-1 2 0 0.1
-1 1 -1 -0.7


Update on this topic. It would seem the W1209s that I purchased have some sort of bug when in cooling/mode and crossing over between -/+ using the Hys running at 0C/2C now and bought different units. Figured I would share.

On a different note tapped today and want to say that check value to bypass to the tank works great did not have the pump on and when I got back to shack to turn it on sap was flowing into the collection tank through the check valve. Simple and easy appreciate the help